/Engine/Source/Runtime/Engine/Classes/Animation/AnimInstance.h
Get pointer to BlendingOutStarted delegate for Montage. If Montage reference is NULL, it will pick the first active montage found.
FOnMontageBlendingOutStarted * Montage_GetBlendingOutDelegate ( [UAnimMontage](API\Runtime\Engine\Animation\UAnimMontage) * Montage )